I wouldn't be without it in the garden. It gives it a billowing, abundant, generous look - what I think of as a romantic English Garden look. You could make a whole easy to look after garden with alchemilla, hardy geraniums and hostas - a bit of a cliché perhaps, but none the worse for that. It does seed itself everywhere (but isn't hard to remove) and whole plants can collapse after heavy rain. Then you either wait for it to pick up, or cut it hard and wait for it to perform all over again at a time when fresh foliage is most needed in late summer. This vaseful is only half of one plant!
I'm told there are people who don't like it!
How can that be?